EP 1458099 B1 20051221 - A phase-locked loop circuit with switched-capacitor conditioning of the control current
Title (en)
A phase-locked loop circuit with switched-capacitor conditioning of the control current
Title (de)
Phasenregelschleife mit Aufbereitung des Steuerstroms durch einen schaltbaren Kondensator
Title (fr)
Boucle à verouillage de phase avec conditionement du courant de contrôle par capacité commutée
Publication
Application
Priority
EP 03425156 A 20030314
Abstract (en)
[origin: EP1458099A1] A phase-locked loop circuit (100) is proposed for providing an output signal having a frequency depending on the frequency of a reference signal, the circuit including means (105-110) for deriving a feedback signal from the output signal, means (115-120) for providing a control signal indicative of a phase difference between the reference signal and the feedback signal, means (140-145) for controlling the frequency of the output signal according to the control signal, and means (125-135) for conditioning the control signal through at least one conditioning signal; in the circuit of the invention, the means for conditioning includes means (135) for accumulating an energy provided by the control signal and the at least one conditioning signal during a first phase and for transferring the accumulated energy to the means for controlling the frequency of the output signal during a second phase. <IMAGE> <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
H03L 7/089 (2006.01); H03L 7/093 (2006.01); H03L 7/197 (2006.01)
CPC (source: EP US)
H03L 7/0891 (2013.01 - EP US); H03L 7/093 (2013.01 - EP US); H03L 7/1976 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1458099 A1 20040915; EP 1458099 B1 20051221; DE 60302867 D1 20060126; US 2005001689 A1 20050106; US 7005928 B2 20060228
DOCDB simple family (application)
EP 03425156 A 20030314; DE 60302867 T 20030314; US 79824404 A 20040311